土样水分速测电容传感器的研制  

Study on the development of a capacitance sensor used in fast testing of water content in soil samples

作　　者：胡建东[1] 蒋国良[1] 谢卫东[2] 孙晓全[3] 

机构地区：[1]河南农业大学,河南郑州450002 [2]湖南省高速公路管理局,湖南长沙410001 [3]河南省计量测试研究所,河南郑州450003

出　　处：《河南农业大学学报》2002年第2期191-194,共4页Journal of Henan Agricultural University

基　　金："九五"国家科技部攻关项目 (96 A2 3 0 2 0 10 )

摘　　要：在分析常用快速测定方法基础上从低成本快速测试的目标出发提出了实现土样含水量速测用电容传感器结构和原理 ,对电容传感器研制中存在的问题提出了解决办法 .从使用电容传感器测试土样水分结果与常规烘干称重法对比来看 。The problems of traditional testing methods are analyzed, and the capacitance sensor technique is presented for fast and cheap testing of water content in soil .The sensor designing principle and construction are also discussed. The problems have been solved in developing the capacitance sensor. The testing precision of the instrument based on this technique is equivalent with that by the traditional drying and weighing method.The precision can meet the testing requirement of water content in a soil sample.

关 键 词：土样水分 速测电容传感器 研制 介电常数 数学模型 

分 类 号：TH79[机械工程—仪器科学与技术] S152.7[机械工程—精密仪器及机械]